Surface Plasmon Resonance (Spr) Sensor Simulation with Kretschmann Configuration Based on Chitosan-Graphene Oxide Nanocomposite for Lead Metal Ion Detection. physics [Internet]. 2023 Aug. 20 [cited 2026 Jan. 31];4(1):8-15. Available from: https://ejournal.uin-suka.ac.id/saintek/physics/article/view/3585